astagi

const CONNECT_SERVICE = "00020001574f4f2053706865726f2121";
const CONNECT_CHAR = "00020005574f4f2053706865726f2121";

const MAIN_SERVICE = "00010001574f4f2053706865726f2121";
const MAIN_CHAR = "00010002574f4f2053706865726f2121";

const MSG_CONNECTION = [0x75,0x73,0x65,0x74,0x68,0x65,0x66,0x6F,0x72,0x63,0x65,0x2E,0x2E,0x2E,0x62,0x61,0x6E,0x64];
const MSG_INIT = [0x0A,0x13,0x0D];
const MSG_OFF = [0x0A,0x13,0x01];

astagi

let calculateChk = (buff) => {
    let ret = 0x00;
    for (let i = 0 ; i < buff.length ; i++) {
        ret += buff[i];
    }
    ret = ret & 255;
    return (ret ^ 255);
}

astagi

const ESC = 0xAB;
const SOP = 0x8D;
const EOP = 0xD8;
const ESC_ESC = 0x23;
const ESC_SOP = 0x05;
const ESC_EOP = 0x50;

let seq = 0;

let buildPacket = (init, payload=[]) => {

astagi

const noble = require('noble');

let connectTheDroid = (address) => {
    return new Promise((resolve, reject) => {
        noble.on('discover', (peripheral) => {
            if (peripheral.address === address) {
                noble.stopScanning();
                peripheral.connect( (e) => {
                    peripheral.discoverServices([CONNECT_SERVICE], (error, services) => {
                        services[0].discoverCharacteristics([CONNECT_CHAR], (error, characteristics) => {

astagi

let writePacket = (characteristic, buff, waitForNotification=false, timeout=0) => {
    return new Promise(function(resolve, reject) {

        let dataRead = [];

        let checkIsAValidRequest = (dataRead) => {
            if (dataRead[5] != 0x00) {
                characteristic.removeListener('data', listenerForRead);
                reject(dataRead[5]);
            }

astagi

const MSG_ROTATE = [0x0A,0x17,0x0F];


let convertDegreeToHex = (degree) => {
    var view = new DataView(new ArrayBuffer(4));
    view.setFloat32(0, degree);
    return Array
        .apply(null, { length: 4 })
        .map((_, i) => view.getUint8(i))
}

astagi

import requests


def get_all_planets():
    page = 0
    planets = []
    next_url = "https://swapi.co/api/planets/"
    while next_url:
        resp = requests.get(next_url).json()
        next_url = resp['next']

astagi

const elementsBetweenEvenNumbers = (arr) => {
  return arr.reduce((x, current) => {
    x[0].push(current)
    if (x[0].length === 3) {
      if (x[0][0] % 2 === 0 && x[0][2] % 2 === 0)
        x[1].push(x[0][1])
      x[0] = x[0].slice(1)
    }
    return x
  }, [[],[]])[1]